The effect of tip vortex .
然后针对不同的展弦比、减缩频率及初始攻角,计算了矩形扑翼的非定常气动特性及表面流态和动态压力分布,并分析了翼尖涡对扑翼非定常气动特性的影响。
Characteristics of tailless aircraft wingtip stalling, including common and unique characteristics compared with other configurations, are analyzed with emphasis placed on the effect of wingtip stalling on flying qualities of tailless aircraft.
首先分析了无尾飞机翼尖失速的特点 ,包括与其他布局形式共有的和自身特有的特点 ,重点是翼尖失速对无尾飞机飞行品质的影响。
To match these needs,a bigger wing aspect ratio and winglet are adopted as the improvement measures,hopefully the lift-drag ratio of the modified UAV could be increased.
为延长某无人机的留空时间,加大航程和提高升限,用适当加大机翼展弦比和加装翼尖小翼的办法对原型机的气动特性进行了改进,以期能使该无人机的升阻比有较大提高。
Modification of winglet is adopted to raise the lift-drag ratio of the UAV for extension endurance,for enlarge range and for increase ceiling.
为延长无人机留空时间,加大航程和提高升限,可采用加装翼尖小翼的方法使无人机的升阻比有所提高。
Analysis of wingtip vortex characteristics in flows around low-aspect-ratio thin wings for micro air vehicles;
微型飞行器小展弦比薄翼流场中的翼尖涡特性分析
Image method ideal vortex model is used for the analysis of how ground effect impacts wingtip vortex and airflow downwash angle.
计算结果给出了地效飞行器气动性能随飞行高度和迎角的变化规律;采用镜像法理想涡模型分析了地面效应对翼尖涡位置和气流下洗角的影响;详细阐明了地面效应对诱导阻力的影响规律。